there is no requirement from yesterday to opt composition scheme all r liable to pay 5 % duty that can collected from consumers and not entitled to get any input tax credit
as per section 10 restaurant can pay 5% (2.5+2.5) as coumpounding rate under composition scheme. But can not charge it separately in the invoice. He is required to file GSTR 4 ONLY ON QUARTERLY BASIS. Turnover limit is 2 crore now.
yes but compliance burden will be very high. u will have to file 3B till march and if your turnover is more than 1.5 monthly 1-2-3 will have to be filed. otherwise quarterly three return to be filed.